FileHandle open to STDOUT at compile time

```perl
my $f ;BEGIN{ open( $f, ">&STDOUT" ) } print $f "ok"
```

one liner
```
> perlcc -r -e 'my $f;BEGIN{open($f,">&STDOUT");}print $f "ok"'
```

issues noticed with xtestc/0932.t and xtestc/0093.t